← Back to Patent Explorer
US3221831A Expired / Lapsed US ⏱️ 0.0 years remaining

Winged surface effect vehicles

Assignee: DONGLAS AIRCRAFT Co Inc
•
Filing: 1963-12-13
•
Granted: 1965-12-07
•
Expires: 1983-12-13
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Carl W Weiland

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 08:19
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/32; B63B1/322; B60; B60V; B60V1/00; B60V1/22; B63B1/02; B63B1/10; B63B1/12; B64; B64C; B64C35/00; Y; Y02; Y02T; Y02T70/00; Y02T70/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 158 words
A SURFACE EFFECT VEHICLE OF THE CHARACTER TO TRAVEL AIRBORNE IN SURFACE EFFECT OVER TERRAIN SURFACES COMPRISING: A STREAMLINED HULL; A SUBSTANTIALLY HORIZONTALLY DISPOSED WING AFFIXED TO SAID HULL ADJACENT THE LOWER PORTION THEREOF AND HAVING AN APPROXIMATELY PLANAR UNDER SURFACE WITH LEADING EDGE AND TRAILING EDGE REGIONS EXTENDING ALONG A MAJOR PORTION OF THE LENGTH OF SAID WING, SAID WING HAVING A DEFINITELY POSITION ANGLE OF ATTACK, WHICH EFFECTIVELY FUNNELS A LARGE VOLUME OF AIR INTO A SMALLER VOLUME TOWARD SAID TRAILING EDGE BETWEEN SAID WING AND SAID SURFACE TO CREATE A LIFTING CUSHION BENEATH SAID WING BY ITS FORWARD VELOCITY OVER SAID TERRAIN SURFACES; THRUST PRODUCER MEANS MOUNTED ON SAID VEHICLE FOR CREATING SAID FORWARD VELOCITY; AN INFLATABLE DIAPHRAGM CONNECTED TO THE BOTTOM OF SAID HULL FOR LIFTING SAID WING ABOVE SAID SURFACE FOR TAKEOFF OF SAID VEHICLE, SAID MEANS BEING RETRACTABLE DURING FLIGHT TO MINIMIZE THE DISTANCE BETWEEN SAID WING AND SAID SURFACE DURING FLIGHT.
Claim 2
Dependent Claim 158 words
A SURFACE EFFECT VEHICLE OF THE CHARACTER TO TRAVEL AIRBORNE IN SURFACE EFFECT OVER TERRAIN SURFACES COMPRISING: A STREAMLINED HULL; A SUBSTANTIALLY HORIZONTALLY DISPOSED WING AFFIXED TO SAID HULL ADJACENT THE LOWER PORTION THEREOF AND HAVING AN APPROXIMATELY PLANAR UNDER SURFACE WITH LEADING EDGE AND TRAILING EDGE REGIONS EXTENDING ALONG A MAJOR PORTION OF THE LENGTH OF SAID WING, SAID WING HAVING A DEFINITELY POSITION ANGLE OF ATTACK, WHICH EFFECTIVELY FUNNELS A LARGE VOLUME OF AIR INTO A SMALLER VOLUME TOWARD SAID TRAILING EDGE BETWEEN SAID WING AND SAID SURFACE TO CREATE A LIFTING CUSHION BENEATH SAID WING BY ITS FORWARD VELOCITY OVER SAID TERRAIN SURFACES; THRUST PRODUCER MEANS MOUNTED ON SAID VEHICLE FOR CREATING SAID FORWARD VELOCITY; AN INFLATABLE DIAPHRAGM CONNECTED TO THE BOTTOM OF SAID HULL FOR LIFTING SAID WING ABOVE SAID SURFACE FOR TAKEOFF OF SAID VEHICLE, SAID MEANS BEING RETRACTABLE DURING FLIGHT TO MINIMIZE THE DISTANCE BETWEEN SAID WING AND SAID SURFACE DURING FLIGHT.

References Cited (Backward Citations)

US1376675A Cited
US1412848A Cited
US2349584A Cited
US2656136A Cited
GB825442A Cited
US3076204A Cited
US3082976A Cited
US3070327A Cited
US3159361A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-12-06 1969-06-07 1969-12-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-12-06 1973-06-07 1973-12-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-12-06 1977-06-07 1977-12-07 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag